i know but i mean why we could not say There's still opportunity. i think you mean there's still opportunity means there 's still possibility so i think this question has 2 answer one we can say there's still possibility and another one there is still time.both of them means they still have time

Please see Alan's answer in message #6 above. You would need an indefinite article with 'opportunity'._________________"Inside every old person is a young person wondering what happened."
Terry Pratchett